US2200245A - Pressed metal sheave - Google Patents

Description

May 14, 1940. E. H. SCHULTZ, JR

PRESSED METAL SHEAVE Filed March 24, 1959 Patented May 14, 1940 UNITED STATES PATENT orrlcs PRESSED METAL SHEAVE Application March 24, 1939, Serial No. 263,826

13 Claims. (c1. 74-230.!

This invention pertains to a pressed metal sheave, particularly a sheave designed for use in multiple V-belt drives.

It is an object ofthis invention to provide a I more rigid construction by means of improved interlocking means between the plates composing a sheet metal sheave and the spacing rings thereof.

It is a further object of the invention to provide improved driving means between a collection of plates and spacing rings on. one hand, and a supporting hub on the other.

In the drawing illustrating preferred e'mbodiments ,of this invention:

Fig. 1 is a cross-sectional view of a partial sheave assembly in accordance with this invention, showing the interengageinent' between the pressed metal plates and spacing rings comprising the sheave, the hub being shown in dot-andgo dash lines.

Fig. 2 is an end view of the sheave.

Fig. 3 is an elevation, fragmentary view of a plate of the sheave prior to assembly.

Fig. 4 is an elevation view of one 01' the spacing ,5 rings.

Fig. 5 is a cross-sectional view of a hub for supporting the collection of pressed metal plates and spacing rings.-

Fig. 6 is a cross-section fragmentary view of 30 a modified construction of sheave and hub.

Referring to the drawing in detail, the sheave comprises a plurality of disks Ill placed alternately face to face and back to back to provide V-grooves for a plurality of V-belts l5, adjacent plates being welded together at their mutually contacting portions, including the peripheries l4. Each of the groove-forming plates, as shown in Fig. 3, is provided with a central aperture II for receiving a hub, and a plurality oi tongues 12 and I3 extending inward from the inner perimeter of each plate into said aperture. Located between adjacent. pairs of plates Ill are spacing rings it, which are provided with a plurality of tongues ll alined with the tongues ii of plates ll. Spacing rings I8 are also provided with axial grooves l9, which are in alinement with tongues I! of disks It. When the spacing rings I8 are located in position between adjacent pairs'of disks ID, the tongues i2 01 each plate are de- The hub is provided with grooves 22, which receive the alined plate tongues 13 and spacing ring tongues l8.

It will be understoodthat the resulting con- 5 struction provides for transmission of .the torque, between hub 2i and belts l5. Assuming that this is a driving sheave, the torque from the hub is transmitted through the walls of grooves 22 directly to the plates by means of tongues l3, and i0 indirectly through the tongues l8 of spacing rings l6 and to the plates through the walls of grooves l8 and deflected plate tongues l2. With so large an area to transmit the torque, no part of the sheave or hubis overstressed, and a long life for 15. the sheave and hub assembly isthereby obtained. There is no likelihood of play or backlash developing between the disks and' the hub, and the major portion of the shearing stresses on the welds between adjacent disks is relieved.

. A modification is shown in Fig. 6, where the tongues l3 and I8 are replaced by grooves 2%, provided in the disks and spacing rings I6, which cooperate with tongues 23 provided on hub 2|. The grooves and tongues of the modification of 25 Figs. 1 to 5 are thus reversed. The remaining structure is as described above.

Various modifications within the spirit of this invention, and included in the scope of the claims appended hereto, will readily occur to those skilled in the art. For example, it is obvious that the deflected disk tongues l2 could be arranged to cooperate with grooves in the exterior surface of the rings Iii, 18 rather than in the interior surface shown. a

It is claimed and desired to secure by Letters Patent:

1. A sheave comprising a plurality of pressed metal plates provided with alined central apertures and tongues extending therefrom adjacent 0 said apertures, spacing rings adjacent said apertures arranged between certain of said plates and provided with grooves alined with said tongues, said tongues being axially deflected within said grooves, whereby said plates and rings are intera locked against relative rotation.

2. A sheave as defined in claim 1, a hub within said alined apertures, and means for interlocking said hub against rotation with respect to said rings and plates. 5

3. A sheave as defined in claim 1, a hub within said alined apertures, and means i'or interlocking said hub against rotation with, respect to said rings and plates, said interlocking means comprising an axially alined groove in said hub and n a complementary axial tongue on said plates and rings fitting within said groove.

4. A sheave as defined in claim 1, a hub within said alined apertures, and means for interlocking said hub against rotation with respect to said rings and plates comprising an axial groove in said rings and plates and a complementary axial tongue on said hub snugly fitting into said groove.

5. A sheave comprising at least two plates provided with axially deflected abutting conical peripheral surfaces and central apertures, each of said plates having at least two tongues extending therefrom adjacent said apertures, a spacing ring provided with at least one tongue and at least one groove located between said disks at their inner perimeters, one tongue of each plate being axially alined with said ring tongue and one tongue of each plate being axially alined with said ring groove and axially deflected therein'to interlock said ring and said plates.

6. A sheave comprising at least one plate provided with a central aperture and having at least two tongues extending therefrom adjacent said central aperture, a spacing ring provided with at least one tongue and at least one groove located adjacent said disk, the inner perimeter of said disk substantially coinciding with the inner perimeter of said ring, one tongue of said :plate being axially alined with said ring tongue and one tongue of said plate being axially alined with said ring groove and axially deflected therein to interlock said ring and said plate.

7. A pressed metal sheave comprising a plurality of sheet metal plates provided with deflected conical surfaces-and arranged alternately face to face and back to back, said plates being provided with alined central hub-receiving apertures, each plate being provided with a plurality of tongues extending therefrom adjacent said apertures, and spacing rings between alternate plates adjacent said apertures, said spacing rings .being' provided with alternate axial tongues and grooves.

8. A sheave as defined in claim 7, certain of said plate tongues being alined with said spacing ring tongues and other of said plate tongues being alined with said spacing ring grooves and deflected into said grooves, whereby said plates are interlocked with said spacing rings and said collection of plates and rings presents axial ribs extending along the inner bore thereof.

9. A sheave as defined in' claim 7, and a hub removably located within the bore formed by said alined apertures and rings, said hub being provided with grooves whichreceive certain of said alined axial tongues of said plates and rings.

l0. A sheave comprising a plurality of pressed metal plates provided with alined central apertures and a plurality of tongues extending therefrom adjacent said aperture from each plate and alined with the tongues of the remaining plates, 10

spacing rings between adjacent pairs of plates adjacent said apertures, said spacing rings being provided with alternating grooves and tongues at their inner perimeters, alternate ones of said plate tongues being axially alined with said spac- 5 ing ring tongues, and the remaining plate tongues being alined with said spacing ring grooves and deflected axially into said grooves, whereby said rings and plates are interlocked against relative 'go rotation.

11. A sheave comprising a collection of pressed metal plates provided with deflected conical peripheral surfaces and arranged alternately face to face and back to back, said plates being proalined tongues on said plates, certain of said tongues extending radially into said apertures, a plurality of spacing rings arranged between abutting pairs oi? plates adjacent said central vided with alined central apertures and axially 26,

apertures, said spacing rings being provided with alined axial grooves and tongues alined with said plate tongues, those of said plate tongues alined with said ring grooves being axially deflected within said grooves; and a hub located within said alined apertures and provided with grooves occupied by said alined spacing ring and said radial plate tongues.

12. As an article of'manufacture, a sheave spacing ring provided on its inner perimeter with alternate axial tongues and grooves. i

13. A sheave comprising a plurality of disks provided with axially alined hub-receiving openings, spacing rings provided with similar hubreceiving openings interposed between certain of said disks, axial grooves provided in said spac-; I

ing rings, and axially deflected tongues from said disks fitting within said grooves to interlock said disks and rings.

EDWARD H. SCHULTZ. .m.

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